Chemical energy is released or absorbed from reactions in various forms. The mosteasily measurable form of energy comes in the form of heat, or enthalpy for isobaricprocesses. The enthalpy of a reaction can be calculated from the heats of formation /formation enthalpies of the substances involved in the reaction:AHAH; (products) - AH; (reactants)Part ACalculate the standard enthalpy change for the reactionUse the following data:ΔΗ(kJ/mol)-225-393209SubstanceABCDExpress your answer to three significant figures and include the appropriate units.▸ View Available Hint(s)ΔΗixn = 278Submit✓ CorrectPart B-491Previous AnswersμAValuekJmolFor the reaction given in Part A, how much heat is absorbed when 3.30 mol of A reacts?Express your answer to three significant figures and include the appropriate units.▸ View Available Hint(s)A13 ?Units2A + B 2C+2D

Given:∆fH°(A) = -225kJ/mol∆fH°(B) = -393 kJ/mol∆fH°(C) = 209 kJ/mol∆fH°(D) = -491 kJ/mol

Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy for isobaric processes. The enthalpy of a reaction can be calculated from the heats of formation/ formation enthalpies of the substances involved in the reaction: AH AH (products) - AH; (reactants) Part A Calculate the standard enthalpy change for the reaction Use the following data: ΔΗ; Substance (kJ/mol) A B C D ΔΗix = 279 Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Submit ✓ Correct Part B -225 -393 209 -491 μA Value Previous Answers k.J mol For the reaction given in Part A, how much heat is absorbed when 3.30 mol of A reacts? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 13 ? Units 2A+B=2C+2D

Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy for isobaric processes. The enthalpy of a reaction can be calculated from the heats of formation/ formation enthalpies of the substances involved in the reaction: AH AH (products) - AH; (reactants) Part A Calculate the standard enthalpy change for the reaction Use the following data: ΔΗ; Substance (kJ/mol) A B C D ΔΗix = 279 Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Submit ✓ Correct Part B -225 -393 209 -491 μA Value Previous Answers k.J mol For the reaction given in Part A, how much heat is absorbed when 3.30 mol of A reacts? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) 13 ? Units 2A+B=2C+2D

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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